66 results about "Bone prosthesis" patented technology

The ankle joint prosthesis comprises a tibia prosthesis and a talus prosthesis, the tibia prosthesis is provided with a keel, the keel is used for being implanted into a tibia and extends in the front-back direction of the tibia prosthesis, the talus prosthesis is arranged on the lower side of the tibia prosthesis, the talus prosthesis is provided with a fixing rod, and the fixing rod is arranged on the lower side of the tibia prosthesis. The fixing rod is used for being implanted into the talus and obliquely extends downwards from front to back, an included angle alpha is formed between the extending direction of the keel and the extending direction of the fixing rod, and alpha is larger than or equal to 10 degrees and smaller than or equal to 85 degrees. The ankle joint prosthesis is reasonable in structural design, the stability of the ankle joint prosthesis in the human body movement process can be enhanced, and the dislocation risk of the prosthesis is reduced.

The invention provides a tibial prosthesis which comprises a tibial platform provided with a containing groove and a communicating groove, the containing groove is communicated with the upper surface of the tibial platform, and the communicating groove is communicated with the groove bottom wall of the containing groove and the lower surface of the tibial platform; the gasket structure is arranged in the containing groove in a floating mode in the vertical direction; the bone growth body is connected to the lower portion of the gasket structure and located in the communicating groove, and the gasket structure can drive the bone growth body to penetrate out of the tibial plateau downwards when floating in the vertical direction. According to the technical scheme, the problem that in the prior art, the time needed for combining the sclerotin and the prosthesis of a patient is long can be effectively solved.

A tibia prosthesis comprises a tibia gasket, a platform support and a pushing part. A first fixing block connected with the femoral condyle is arranged on the upper portion of the gasket, a first opening is formed in the middle of the gasket, and second fixing blocks are arranged in three surrounding second openings. A third opening is formed in the first groove in the side face of the gasket, and a first limiting block with a fifth opening is arranged in a fourth opening in the bottom. A spring in the third opening pushes the second limiting block to be clamped into the fifth opening. The platform support is provided with a sixth opening and a second groove, a fourth limiting block capable of being opened is arranged in a seventh opening in the upper portion, and a fifth limiting block is hinged into the second groove. A pushing part is arranged in a lower shell of the platform support and comprises a hexagon screw and a fixing ring, a ninth opening is formed in the screw, and the fixing ring is connected with the rotating part through a ratchet wheel. And during rotation, the rotating part pushes the first limiting block to enter the seventh opening, the fourth limiting block is retracted and limited after being opened, and meanwhile, the second limiting block is clamped into the fifth opening to be fixed. And the second fixing block is clamped into the ninth opening to connect the screw and the gasket. And when the rotating part enters the second groove, the fifth limiting block is pushed to be clamped into the second groove, and overall fixing is completed.

The invention relates to the technical field of medical instruments, in particular to a hip joint thighbone prosthesis and a hip joint thighbone prosthesis manufacturing method. The hip joint femoral prosthesis comprises a spherical prosthesis main body and a connecting part, the spherical prosthesis main body is provided with an opening, one end of the connecting part extends into the spherical prosthesis main body and is connected with the spherical prosthesis main body, and the other end of the connecting part extends out of the opening; wherein the inner wall of the spherical prosthesis main body is provided with a functional gradient porous structure, and the porosity and the pore diameter of the functional gradient porous structure are gradually increased from the inner wall of the spherical prosthesis main body to the center direction of the spherical prosthesis main body in the preset direction. According to the hip joint thighbone prosthesis, the service life of a surface replacement type hip joint thighbone prosthesis can be prolonged, the problem that an existing biological fixation type prosthesis is loosened and loses efficacy due to stress shielding is solved, and the risk that a porous structure is prone to falling off from a base body in a long-term load environment is reduced.

The customized artificial meniscus prosthesis comprises a meniscus body, a joint cotyle is arranged in the middle of the meniscus body, a meniscus joint protrusion capable of simulating the shape and the movement track of a meniscus is installed in the joint cotyle, and a center nail is fixedly connected to the top of the meniscus joint protrusion. The free end of the center nail extends out of the lunar bone body and is arranged in a head-shaped bone of the wrist of the human body, and a plurality of sets of ligament suture holes are further formed in the back side of the lunar bone body. The customized artificial lunar bone prosthesis provided by the invention aims to be applied to lunar bone replacement surgery, mainly aims at treating advanced lunar bone ischemic necrosis caused by non-traumatic or traumatic factors, and is beneficial to improving the stability of the prosthesis and improving the joint activity; basic biomechanics and clinical experiment research verify that the prosthesis has good mechanical properties and clinical curative effects, promote development of the lunar bone prosthesis, enable more patients to retain wrist joint movement, create more values for society and families, and contribute to achieving the goal of healthy China.

According to one example, a femoral prosthesis system is provided that has a plurality of sizing options using two families of femoral prostheses is disclosed. The second family of femoral prostheses can have a predetermined increase in femoral posterior condylar offset relative to the first family of femoral prosthesis. In one example, the second family of femoral prostheses can have the predetermined increase in the femoral posterior condylar offset while maintaining substantially a same femoral medial-lateral condylar extent relative to a comparably sized one of the first family of femoral prostheses.

This application provides a knee femoral prosthesis. The knee femoral prosthesis includes: an anterior portion configured for fitting onto the distal anterior condylar osteotomy surface of the femur; a posterior portion configured for fitting onto the distal posterior condylar osteotomy surface of the femur; a middle portion configured to connect the anterior and posterior portions; and at least two through-holes configured to receive fasteners to secure the knee femoral prosthesis to the distal femur. The at least two through-holes include through-holes whose bore axes intersect or are opposite to each other. Using the knee femoral prosthesis according to this application, a more targeted prosthesis fixation strategy can be provided based on the patient's individual condition, thereby achieving better initial prosthesis stability. Furthermore, this application also relates to a knee prosthesis system incorporating this prosthesis.

A tibial prosthesis comprises a tibial pad, a platform holder and a pushing part. The upper part of the pad has a first fixing block connected with femoral condyle, the middle part has a first opening, and the periphery has three second openings with second fixing blocks. The first recess has a third opening, and the bottom has a fourth opening with a first limiting block with a fifth opening. The spring in the third opening pushes the second limiting block to be clamped in the fifth opening. The platform holder has a sixth opening and a second recess, the upper part has a seventh opening with a fourth limiting block that can be expanded, and the second recess has a fifth limiting block that is hinged. The pushing part is set in the lower part of the platform holder, which comprises a hexagonal screw and a fixing ring, the screw has a ninth opening, and the fixing ring is connected with the rotating part through a ratchet. When rotating, the rotating part pushes the first limiting block into the seventh opening, expands the fourth limiting block, and then shrinks the limiting block, while the second limiting block is clamped in the fifth opening to be fixed. The second fixing block is clamped in the ninth opening to connect the screw with the pad. When the rotating part enters the second recess, it pushes the fifth limiting block to be clamped in the recess, and the overall fixation is completed.

This invention belongs to the field of foot and ankle joint replacement implant technology, and discloses an ankle joint talus prosthesis with an antibacterial porous interface and its preparation method. It includes a prosthesis substrate with an overall anatomically contoured structure, including a superior articular surface, a inferior articular surface, and an anterior articular surface; the area of ​​the prosthesis substrate in contact with residual bone tissue is designed as a three-dimensional porous structure; an antibacterial bioactive composite coating is grown in situ on the surface of the prosthesis substrate; it includes calcium and phosphorus bioactive components and antibacterial ions. This invention, by constructing an antibacterial bioactive composite coating at a porous bone integration interface, utilizes biocompatibility and osteoconductivity to induce bone tissue growth. Furthermore, the antibacterial ions can be slowly and continuously released in the interstitial spaces, achieving a dual function of promoting bone integration and preventing infection. Moreover, the antibacterial bioactive composite coating is formed through in-situ growth, resulting in a strong bond with the substrate and preventing detachment.

The utility model discloses a customized artificial lunar bone prosthesis which comprises a lunar bone body, a joint cotyle is arranged in the middle of the lunar bone body, a head-moon joint protrusion capable of simulating the form and the movement track of a head-moon bone is installed in the joint cotyle, and the top of the head-moon joint protrusion is fixedly connected with a center nail. The free end of the center nail extends out of the lunar bone body and is arranged in a head-shaped bone of the wrist of the human body, and a plurality of sets of ligament suture holes are further formed in the back side of the lunar bone body. The customized artificial lunar bone prosthesis provided by the utility model aims to be applied to lunar bone replacement surgery, mainly aims to treat advanced lunar bone ischemic necrosis caused by non-traumatic or traumatic factors, and is beneficial to improving the stability of the prosthesis and improving the joint movement; basic biomechanics and clinical experiment research verify that the prosthesis has good mechanical properties and clinical curative effects, promote development of the lunar bone prosthesis, enable more patients to retain wrist joint movement, create more values for society and families, and contribute to achieving the goal of healthy China.

The invention provides a sacrum prosthesis which comprises a main body part used for being connected with a sacrum or a vertebral body; the first connecting block is used for being connected with a first hip bone and is spaced from the main body part; the second connecting block is connected between the main body part and the second hip bone, and the second connecting block is adjustably arranged around the horizontal axis relative to the main body part; the fixing piece is connected between the main body part and the second connecting block; the first rotation stopping part is arranged on the main body part; and the second rotation stopping part is arranged on the second connecting block, and the second rotation stopping part can be in rotation stopping fit with the first rotation stopping part. According to the technical scheme, the problem that the sacrum prosthesis is difficult to adapt to different patients in the prior art is effectively solved.

The utility model relates to the technical field of orthopedic medical instruments, and discloses a tibial prosthesis structure. Comprising a tibia prosthesis and a medullary cavity insertion section which are detachably connected, a first groove is formed in the outer side wall of the tibia prosthesis, a third groove is formed in the outer side wall of the medullary cavity insertion section, and the first groove and the third groove are sequentially communicated to form a long groove used for placing an implanted bone. The long groove is a bone grafting space extending in the length direction of the tibia prosthesis structure, the bone grafting material is contained in the long groove, on one hand, the bone grafting part can be prevented from protruding after an operation, and the occurrence rate of wound complications is reduced; on the other hand, healing of the patellar ligament and the bone grafting part is facilitated, the patellar ligament fracture risk is reduced, and the knee joint function of a patient is improved.

A computer-executable method for selecting a femoral prosthesis (1) is carried out by acquiring a 3D model of a patient's femur at a pre-operative stage. A plurality of identification parameters identifying the structure of the femoral bone are measured / acquired on that model. These parameters are used to query a database with the aim of identifying within it the prosthesis (1) that best approximates the structure of the femur. Based on a correspondence between the measured parameters and the ones present within the database, the femoral prosthesis (1) having the highest number of matches is selected. Also proposed is an arthroplasty system comprising a plurality of prostheses (1) subdivided into families according to respective identification parameters enabling the identification of the specific prosthesis (1) that best satisfies and adapts to the needs and morphotype of the patient.

The invention relates to an ankle joint tibia prosthesis, an ankle joint prosthesis and a navigation system.The ankle joint tibia side prosthesis comprises a prosthesis body and a sliding part, the sliding part is arranged on the rear side of the prosthesis body, the position of the sliding part relative to the prosthesis body in the front-back direction of the prosthesis body is adjustable, and the sliding part is arranged on the back side of the prosthesis body. And the prosthesis main body and the sliding piece are in contact with a tibia osteotomy surface. The ankle joint tibia prosthesis can adapt to tibia anatomical structure differences of different patients, the covering effect of the ankle joint tibia prosthesis and the tibia osteotomy surface is good, the stability of the ankle joint tibia prosthesis after implantation is improved, and adverse reactions of postoperative patients are reduced.

The talus prosthesis is provided with an inner side face and an outer side face, the inner side face and the outer side face are arranged on the two sides of the median sagittal plane of the talus prosthesis respectively, and the inner side face and the outer side face are arranged in a projection orthogonal to the vertical direction of the talus prosthesis. The contour of at least one of the inner side face and the outer side face is a curve and protrudes in the direction away from the median sagittal plane. According to the talus prosthesis, the contact mode of the talus prosthesis and the inner side and the outer side of the tibia can be changed, direct rigid collision between the talus prosthesis and the tibia is avoided, the risks of abrasion, pain, inflammation and the like caused by collision between the talus prosthesis and the tibia are greatly reduced, the implanting stability of the talus prosthesis can be improved, and postoperative recovery of a patient is facilitated.

This invention discloses a method for coating tantalum on the surface of biomedical PEEK materials. The method includes the following steps: S1, PEEK pretreatment; S2, PEEK sample preparation: drying the pretreated PEEK wire in an oven and printing the PEEK sample using a high-temperature 3D printer; S3, using a Ta2O5 target as the evaporation source, employing DC magnetron sputtering technology, and adjusting the sputtering time and gas to coat the surface of the PEEK sample with tantalum of 250 ± 20 nm; S4, obtaining a tantalum coating on the PEEK surface after annealing. This invention provides a method for coating tantalum on the surface of biomedical PEEK materials, which can coat tantalum on the surface of PEEK without embedding the tantalum in the PEEK matrix. The obtained Ta-PEEK material has excellent osteoinductive properties and can be applied to implantable bone prostheses such as artificial temporomandibular joint substitutes.

An endoprosthesis intended to replace a resected portion of bone and joint. The endoprosthesis can be non-invasively, manually operated to lengthen a patient's limb both intraoperatively and postoperatively. It includes bone anchoring components for anchoring to a first and second long bone, a joint to replace the function of an orthopedic joint, and a purely mechanical lengthening mechanism which can be located and operated manually by an operator by pressing on skin of a patient without requiring a surgical incision. The axle for joint is the actuating mechanism that lengthens the implant. The endoprosthesis does not need or include any magnets, electric motors, electric current, application of heat or a fluid displacement (hydraulic) system.

The utility model relates to the technical field of medical instruments, in particular to a knee joint center type cushion block which comprises a knee joint center type cushion block body, a prosthesis connecting opening is formed in the bottom of the knee joint center type cushion block body, and an extension rod connecting hole is formed in the top of the knee joint center type cushion block body. And a solid biological fixing part is arranged between the prosthesis connecting port and the extension rod connecting hole. The cushion block provided by the utility model is short in operation time, good in supporting performance, capable of preventing collapse of a repaired bone defect part, capable of realizing close fit with a knee joint femoral condyle prosthesis or a knee joint tibia prosthesis, and capable of realizing biological fixation and filling of the bone defect part.

Embodiments of the present application are applicable to the technical field of computer-aided medical treatment and surgical planning, and provide a single-condyle mobile platform surgical planning method and a computer device. The method comprises: determining a plurality of prostheses to be planned, the prostheses comprising femoral prostheses and tibial prostheses, and the femoral prostheses all being spherical prostheses; placing the femoral prostheses with the distal end point of a pre-constructed femur three-dimensional model as the center, and adjusting the femoral prostheses to target femur positions; calculating femur section coverage rates of the femoral prostheses at the target femur positions; determining a target femoral prosthesis from the plurality of femoral prostheses according to the femur section coverage rates; determining a target tibial prosthesis from the plurality of tibial prostheses, and performing preoperative planning of a single-condyle mobile platform knee joint replacement surgery based on the target tibial prosthesis and the target femoral prosthesis. By using the above method, preoperative prosthesis planning can be performed for single-condyle knee joint surgery of a mobile platform.

A system including a knee ranging tool: including a base configured to locate on a resected proximal face of a tibia in a knee of a patient; defining a tibial reference surface configured to run against a femoral surface of an artificial femoral component, installed on a distal face of a femur of the patient, during articulation of the knee of patient; including a set of stages interposed between the base and the tibial reference surface, configured to locate the tibial reference surface relative to the base, and compliant to medial-lateral translation, anteroposterior translation, and transverse rotation; and configured to indicate a medial-lateral translation offset, an anteroposterior translation offset, and a transverse rotation offset corresponding to a position of the tibial reference surface, relative to the base, that yields elastic deformation of ligaments in the knee over a range of motion of the knee.

The present invention relates to a method for interactively designing via an implant design platform an artificial joint implant for hip arthroplasty and corresponding broaching and osteotomy guide apparatuses. The proposed implant design platform reconstructs the anatomy of the patient's pelvic and femoral bones in a 3D digital environment, and accordingly develops a patient-specific femoral implant stem as well as patient-specific surgical tools broach / rasp, osteotomy guide) used in total 10 hip arthroplasty. The patient-specific femoral implant stem developed may be optimized to ensure optimum mechanical performance for the patient, employing complex internal lattices that minimize stress shielding and advanced trabecular surfaces to promote osseointegration.

The invention relates to a talus prosthesis and a preparation method thereof. The talus prosthesis comprises articular surface layers, a main body frame and a bone cement filling body, the articular surface layers are arranged on the main body frame, the main body frame is of a porous structure and is provided with beams which are vertically and horizontally crossed among the multiple articular surface layers, and the porosity of the main body frame in a high stress concentration area is smaller than that of the main body frame in a low stress area. The diameter of a beam of the main body frame in a high stress concentration area is larger than that of a beam of the main body frame in a low stress concentration area, and the main body frame and the articular surface layer are formed through 3D printing. The main body frame is filled with the bone cement filling body. According to the talus prosthesis, the density in a high stress concentration area is large, the density in a low stress concentration area is small, the mechanical adaptability of the talus prosthesis is improved, the weight of the talus prosthesis is reduced, the light weight of the talus prosthesis is achieved, and the expected remarkable effect of reducing stress shielding is achieved; the bottlenecks of poor mechanical suitability and limited process of the talus prosthesis in the related technology are broken through, and the risks of long-term loosening and abrasion can be reduced.

An endoprosthesis intended to replace a resected portion of bone and joint. The endoprosthesis can be non-invasively, manually operated to lengthen a patient's limb both intraoperatively and postoperatively. It includes bone anchoring components for anchoring to a first and second long bone, a joint to replace the function of an orthopedic joint, and a purely mechanical lengthening mechanism which can be located and operated manually by an operator by pressing on skin of a patient without requiring a surgical incision. The axle for joint is the actuating mechanism that lengthens the implant. The endoprosthesis does not need or include any magnets, electric motors, electric current, application of heat or a fluid displacement (hydraulic) system.

1. Name of the product in this design: brow bone prosthesis (peek). 2. Purpose of this design: Prosthesis for plastic surgery. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application provides a tibial prosthesis, comprising: a platform part, comprising a platform body, a first porous structure and a medullary cavity rod, the medullary cavity rod being connected to a first side of the platform body, the first porous structure being arranged on the first side of the platform body and located at the outer periphery of the medullary cavity rod, the first porous structure comprising a first porous layer and a second porous layer, the first porous layer being arranged closer to the platform body than the second porous layer, the first porous layer having a first porosity, the second porous layer having a second porosity, the first porosity being smaller than the second porosity; and a spacer part arranged on a second side of the platform body. The technical scheme of the application can effectively solve the problem of poor prosthesis adaptability and stability in the related art.

According to one example, a tibial prosthesis that optionally includes a baseplate and a tibial keel. The baseplate optionally including: a distal surface sized and shaped to substantially cover a proximal resected surface of a tibia; a proximal surface opposite the distal surface, the proximal surface having a lateral compartment and a medial compartment opposite the lateral compartment; a periphery extending between the distal surface and the proximal surface; a first pocket formed in the baseplate and recessed from the distal surface, wherein the first pocket is configured to receive a bone cement therein; a second pocket formed in the baseplate and recessed from the first pocket, wherein the second pocket is configured to receive a portion of the bone cement. The tibial keel extending distally from the distal surface to define a longitudinal tibial keel axis.

The present application relates to a kind of ankle joint prosthesis and ankle joint prosthesis system, the ankle joint prosthesis includes: tibial prosthesis, sliding core prosthesis and talus prosthesis, the sliding core prosthesis is arranged between the tibial prosthesis and the talus prosthesis, the sliding core prosthesis has concave spherical surface, the talus prosthesis has convex spherical surface, the convex spherical surface and the concave spherical surface sliding fit, in the projection parallel to the sagittal plane of the ankle joint prosthesis, the midpoint of the line of the front end of the tibial prosthesis and the rear end of the tibial prosthesis is P1, in the front-rear direction of the ankle joint prosthesis, the first coronal plane F1 passing through the center of the convex spherical surface has preset interval with P1, and the P1 is located in the rear side of the first coronal plane F1.The structure of the ankle joint prosthesis of the present application is stable after implantation, stress is uniform, can slow down prosthesis wear, is beneficial to patient postoperative recovery.

The hip joint prosthesis revision extractor comprises a sliding weight rod, a sliding weight is connected to the sliding weight rod in a sliding mode, a check block is connected to the upper end of the sliding weight rod, and a femoral prosthesis connecting mechanism is connected to the lower end of the sliding weight rod. Through cooperation of the sliding weight rod, the check block, the femoral prosthesis connecting mechanism, the sliding weight and the like, when the femoral prosthesis is used in an operation, the femoral prosthesis connecting mechanism is connected with a femoral stem according to the actual condition of a patient and the use state of the femoral stem, the femoral prosthesis fixing mechanism is used for fixing, and the sliding weight at the rear end is held by a hand to enable the sliding weight to slide towards the check block at the tail end of the sliding weight rod; the impact force drives the sliding weight rod to move backwards and drives the femoral prosthesis connecting mechanism to move backwards, so that the femoral stem is withdrawn from the femur, and the extractor has the characteristics of convenience in use, small size, simplicity in operation, convenience in operation and capability of saving operation time.

The utility model provides a kind of tumour type knee joint prosthesis, for reconstructing the bone defect after distal femur tumour resection of children, including femur prosthesis and tibia prosthesis, the top of femur prosthesis is used to connect with distal femur, the bottom of tibia prosthesis is used to connect with proximal tibia, the bottom of femur prosthesis and the top of tibia prosthesis are connected by pin shaft rotation, the front side of tibia prosthesis is provided with limiting portion, limiting portion is used to limit tibia prosthesis and femur prosthesis knee hyperextension.In the front side of limiting portion is provided with the concave groove of recession to the rear, the intersection of the top surface and the front side of limiting portion is provided with avoidance chamfer.So, when patient carries out knee joint flexion, limiting portion no longer occurs interference with the inner side of patella, avoid limiting portion to patella damage.